Patents by Inventor Shinobu MINATANI

Shinobu MINATANI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Battery state estimation device and battery state estimation method
    Patent number: 10976372
    Abstract: A battery state estimation device for estimating a charged electric charge quantity of a rechargeable battery includes an impedance measurement unit configured to measure a plurality of complex impedances of the rechargeable battery by supplying measurement power to the rechargeable battery, a parameter calculation unit configured to calculate a parameter that includes a ratio of a difference between measurement angular velocities of two complex impedances in a diffusion region among the measured complex impedances to a difference between components of the two complex impedances, and an electric charge quantity estimation unit configured to estimate a charged electric charge quantity of the rechargeable battery based on the calculated parameter and preset correlated information between the charged electric charge quantity of the rechargeable battery and the parameter.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: April 13, 2021
    Assignee: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Daisuke Koba, Yosuke Murota, Shinobu Minatani, Hiroki Nakafuji, Daisuke Shinohara, Tetsuya Osaka
  • BATTERY STATE ESTIMATION DEVICE AND BATTERY STATE ESTIMATION METHOD
    Publication number: 20190195960
    Abstract: A battery state estimation device for estimating a charged electric charge quantity of a rechargeable battery includes an impedance measurement unit configured to measure a plurality of complex impedances of the rechargeable battery by supplying measurement power to the rechargeable battery, a parameter calculation unit configured to calculate a parameter that includes a ratio of a difference between measurement angular velocities of two complex impedances in a diffusion region among the measured complex impedances to a difference between components of the two complex impedances, and an electric charge quantity estimation unit configured to estimate a charged electric charge quantity of the rechargeable battery based on the calculated parameter and preset correlated information between the charged electric charge quantity of the rechargeable battery and the parameter.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Applicant: PRIMEARTH EV ENERGY CO., LTD.
    Inventors: Daisuke KOBA, Yosuke MUROTA, Shinobu MINATANI, Hiroki NAKAFUJI, Daisuke SHINOHARA, Tetsuya OSAKA